You are missing the big picture. This isn't necessarily about the price level, but China's coercive, illegal trade practice to gain market advantage.
For instance, look at how they came to dominate the battery manufacturing. Foreign battery makers still have limited acccess to China's local EV market after the Chinese gov't forced them out under Xi's Made-In-China 2025[1]:
... China requires auto makers to use batteries from one of its approved suppliers if they want to be cleared to mass-produce electric cars and plug-in hybrids and to qualify for subsidies. These suppliers are all Chinese, so such global leaders as South Korea’s LG Chem Ltd and Japan’s Panasonic Corp. are excluded.
... Foreign batteries aren’t officially banned in China, but auto executives say that since 2016 they have been warned by government officials that they must use Chinese batteries in their China-built cars, or face repercussions. That has forced them to spend millions of dollars to redesign cars to work with inferior Chinese batteries, they say.
... “We want to comply, and we have to comply,” said one executive with a foreign car maker. “There’s no other option.”